Originally aired in 1971 on PBS, actually KCET in Los Angeles at the Vine Street Theater on Hollywood and Vine, a theater with a little studio in the back part of the building, which is not there anymore. They shot 6 hours, but only broadcast 1 hour, unscripted and unrehearsed.

It was the first national "stereo" rock-and-roll TV broadcast - that's why Leon agreed to do it.